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AutoCodes - Generic - B258A

B258A Code - Low Beam Control Circuit

- Code Popularity: 3,639 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B258A?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Blown Low Beam Headlamp Fuse
  • Low Beam Headlamp Fuse harness is open or shorted
  • Low Beam Headlamp Fuse circuit poor electrical connection
  • Faulty Body Control Module (BCM)
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How to Fix the DTC B258A?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

B258A:01 Low Beam Control Circuit Short to Battery
B258A:02 Low Beam Control Circuit Short to Ground
B258A:04 Low Beam Control Circuit Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B258A code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B258A Description

With the headlamp switch in the ON position, the headlamp switch headlamp ON signal circuit is grounded through the headlamp switch. The Body Control Module (BCM) responds by applying ground to the low beam relay control circuit which energizes the low beam relay. With the low beam relay energized, the switch contacts close allowing battery voltage to flow through the low beam fuses to the low beam control circuits illuminating the low beam headlamps. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the headlamp low beam relay control circuit.

OBDII Code B258A - Low Beam Control Circuit - AutoCodes.com
B258A Code - Low Beam Control Circuit

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